Answer:
A. Sentence length and punctuation.
Explanation:
A writer's style can be best described or defined as the choices of words, the arrangement, the tone, the structure, and the language that a writer uses in presenting a story. In short, it can simply be defined as the way a writer writes a story.
The given excerpt is from Walter Lord's "A Night To Remember", a non-fictional story based on the night the Titanic sank. And in particular, the given lines are taken from before the iceberg was discovered and everything still seems calm. Through the length of the sentence and the ellipses, the punctuation used in describing the scene, the author uses this unique technique to show/ create his style.